Sanral
Duplicate statements different amounts payable?

I recently received two accounts statements from Satanrel for the same charges, one with a detailed statement and pictures and one without but quoting the same invoice number (why two statements in the first place?)
However what confused the issue is that the discounted amount to pay off the same total of R139.62 was different by 23 cents and I thought it was a new one so paid twice (R55.62 and then R55.85) therefore I would like the second amount credited?
Cost of posting two statements and six printed pages made up by getting me to pay twice???